I plan to put a PS2 in there. I'm planning to have the new 900degree Gran Turismo 4 steering wheel. I'm fond of the GT series and I really like BurnOut 2.
I haven't found good forcefeedback steeringwheels for the XBox yet (though with the prospect of "Outrun 2" the XBox is very tempting!)
Since I live in the Netherlands, no problem of getting a SCART lead, I have a bunch of those lying around. SCART is the standar for video connections over here.